Results 21 to 30 of about 1,743,362 (341)

The origin of galactic cosmic rays [PDF]

, 2007
The origin of galactic cosmic rays is one of the most interesting unsolved problems in astroparticle physics. Experimentally, the problem is attacked by a multi-disciplinary effort, namely by direct measurements of cosmic rays above the atmosphere, by ...
Aharonian, Aharonian, Aharonian, Allan, Amenomori, Antoni, Antoni, Antoni, Antoni, Antoni, Apel, Ardouin, Baade, Bell, Berezhko, Berezhko, Blanford, Candia, Doll, Engel, Engler, Falcke, Ferenc, Fermi, Gahbauer, Gaisser, Garcia-Munoz, Garzia-Munoz, Guzik, Hess, Hinton, Huege, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Hörandel, Jörg R. Hörandel, Kestel, Krymsky, Maier, Matthews, Milke, Navarra, Ptuskin, Seo, Simpson, Strong, Völk, Weekes, Yanasak   +54 more
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“Medieval” and “Modern” Conceptions of the Colours of Light in Early Modern England and Isaac Oliver’s Portrait Miniatures

E-REA, 2015
The usual distinction between ornamental and naturalistic styles is traditional when Nicholas Hilliard’s works and treatise The Art of Limning (c. 1600) are compared to Isaac Oliver’s, his pupil.
Raphaëlle COSTA DE BEAUREGARD
doaj   +1 more source

Fishing effects on elasmobranchs from the Pacific Coast of Colombia

Universitas Scientiarum, 2016
During 1995, 2001, 2003, 2004 and 2007; we studied the temporal variation in the structure of the elasmobranch assemblage along the Colombian Pacific coast using: the community index of diversity, heterogeneity, equitability, species composition, average
Andrés Felipe Navia, Paola Andrea Mejía-Falla   +1 more
doaj   +1 more source

X-rays

British Journal of Radiology: Röntgen Society Section, 1926
Bibliography at end of each chapter. ; Mode of access: Internet.
Broglie, Maurice de, 1875-1960 http://id.loc.gov/authorities/names/no00066931 http://viaf.org/viaf/108713223, Clarke, J. R. (Joseph Ryle), translator. http://id.loc.gov/authorities/names/no98102447 http://viaf.org/viaf/118485904   +1 more
openaire   +1 more source

State of Shark and Ray Genomics in an Era of Extinction

Frontiers in Marine Science, 2021
Chondrichthyan species (sharks, rays, skates, and chimeras) are a class of high ecological, economic, and cultural significance, and yet they are the most threatened taxa in the marine environment.
Jessica Pearce, Jessica Pearce, Matthew W. Fraser, Matthew W. Fraser, Ana M. M. Sequeira, Ana M. M. Sequeira, Parwinder Kaur, Parwinder Kaur   +7 more
doaj   +1 more source

Centaurus A at Hard X-rays and Soft Gamma-rays [PDF]

, 2009
Centaurus A, at a distance of less than 4 Mpc, is the nearest radio-loud AGN. Its emission is detected from radio to very-high energy gamma-rays. Despite the fact that Cen A is one of the best studied extragalactic objects the origin of its hard X-ray ...
Bloser, Boggs, Bond, Collmar, Diehl, Gehrels, Gehrels, Ghisellini, Greiner, H. Steinle, Israel, Johnson, Maisack, Orellana, Petry, Pinkau, Rejkuba, Steinle, Steinle, Steinle   +19 more
core   +1 more source

New generation Cherenkov telescope array: HADAR and its performance introduction

Nuclear Physics B
Astrophysical very high energy (VHE) gamma-rays are believed to result almost exclusively from the interactions of populations of highly relativistic particles with ambient matter or photon fields.
Qingyuan Hou, Qingqian Zhou, Tianlu Chen, Youliang Feng, Hengjiao Liu, Yiqing Guo, Cheng Liu, Zihao Zhang, Xinlong Li, Qi Gao, Maoyuan Liu, Xiangli Qian, Yuanqi Liu, Jiadan Xie, Shanjie Shu, Weiqi Han, Qijiao Fang, Yanan Wang, Shaohua Zhang   +18 more
doaj   +1 more source

Viscum album L. subsp. austriacum (Wiesb.) Vollman (Çam ökse otu)'un Pinus sylvestris L. (Sarıçam)'in Odun Elemanlarına Etkisi

Düzce Üniversitesi Bilim ve Teknoloji Dergisi, 2018
Ökse otları herdem yeşil, yarıparazit angiosperm bitkileridir. Ağaçların dal ve gövde gibi kısımların dahaustorium adı verilen kök benzeri yapılarını kullanarak konukçusunun ksileminenüfuz ederler.
Çağdaş Göl, Bedri Serdar, Murat Öztürk, Kadir Alperen Coşkuner, Ertuğrul Bilgili   +4 more
doaj   +1 more source

How to use molecular clouds to study the propagation of cosmic rays in the Galaxy

, 2010
Observations of molecular clouds in the gamma ray domain provide us with a tool to study the distribution of cosmic rays in the Galaxy. This is because cosmic rays can penetrate molecular clouds, undergo hadronic interactions in the dense gas, and ...
Gabici, Stefano
core   +3 more sources

Role of line-of-sight cosmic ray interactions in forming the spectra of distant blazars in TeV gamma rays and high-energy neutrinos

, 2011
Active galactic nuclei (AGN) can produce both gamma rays and cosmic rays. The observed high-energy gamma-ray signals from distant blazars may be dominated by secondary gamma rays produced along the line of sight by the interactions of cosmic-ray protons ...
Beacom, John F., Essey, Warren, Kalashev, Oleg, Kusenko, Alexander   +3 more
core   +1 more source